Endogenous levels of auxin and their metabolites (pmol g−1 DW) in transgenic lines and control plants of poinsettia grown under a short photoperiod of 10 h.

Different letters within a parameter indicate significant differences (Tukey’s test at p≤0.05). Mean value ± SE (standard error) are given; Three shoots of one plant were treated as one replicate and three separate replicates were analyzed.